package com.sweet.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;

import java.util.concurrent.TimeUnit;

@Service
public class PayService {
    /***************************服务降级start******************************************************/
    //成功
    public String paymentInfo_OK(Integer id) {
        return "线程池：" + Thread.currentThread().getName() + "   paymentInfo_OK,id：  " + id + "\t" + "哈哈哈";
    }

    // 失败
    @HystrixCommand(fallbackMethod = "paymentInfo_TimeOut_Fallback",commandProperties = {
            // 3秒钟以内就是正常的业务逻辑
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "3000")
        }
    )
    public String paymentInfo_TimeOut(Integer id, Integer timeNumber) {
        try {
            TimeUnit.SECONDS.sleep(timeNumber);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return "线程池：" + Thread.currentThread().getName() + "   paymentInfo_TimeOut,id：  " + id + "\t" + "正常返回，但" + " 耗时(秒)" + timeNumber;
    }

    /**
     * 超时兜底方法
     * @param id
     * @return
     */
    public String paymentInfo_TimeOut_Fallback(Integer id, Integer timeNumber) {
        return "线程池：" + Thread.currentThread().getName() + "   paymentInfo_TimeOut,"+ timeNumber + "s, id：  " + id + "\t" + "服务超时或异常，请稍后再试~~";
    }


    // 模拟运行时异常失败
    @HystrixCommand(fallbackMethod = "paymentInfo_Error_Fallback", commandProperties = {
            // 3秒钟以内就是正常的业务逻辑
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "3000")
    }
    )
    public String paymentInfo_Error(Integer id) {
        System.out.println(10/0);
        return "线程池：" + Thread.currentThread().getName() + "   paymentInfo_error,id：  " + id + "\t" + "正常返回";
    }

    /**
     * 服务异常兜底方法
     * @param id
     * @return
     */
    public String paymentInfo_Error_Fallback(Integer id) {
        return "线程池：" + Thread.currentThread().getName() + "   paymentInfo_Error, id：  " + id + "\t" + "服务超时或异常，请稍后再试~~";
    }

    /***************************服务降级end******************************************************/

    /***************************服务熔断start******************************************************/
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback",commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled",value = "true"),  //是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold",value = "10"),   //请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds",value = "10000"),  //时间范围
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage",value = "60"), //失败率达到多少后跳闸
    })
    public String paymentCircuitBreaker(Integer id){
        if (id < 0){
            throw new RuntimeException("*****id 不能负数");
        }
        String serialNumber = IdUtil.simpleUUID();

        return Thread.currentThread().getName()+"\t"+"调用成功,流水号："+serialNumber;
    }
    public String paymentCircuitBreaker_fallback(Integer id){
        return "id 不能负数，请稍候再试,(┬＿┬)/~~     id: " +id;
    }

    /***************************服务熔断end******************************************************/
}
